#3F46BC#3F46BC

#3F46BC is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.3% C 0.182 H 274.2°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F46BC
RGB	rgb(63, 70, 188)
HSL	hsl(237, 50%, 49%)
HSV	hsv(237, 66%, 74%)
CMYK	cmyk(66.5%, 62.8%, 0%, 26.3%)
CIE-LAB	lab(36.11, 35.05, -63.01)
CIE-LCH	lch(36.11, 72.11, 299.08°)
OKLab	oklab(46.34% 0.0133 -0.1817)
OKLCH	oklch(46.34% 0.182 274.2)
XYZ	xyz(13.3141, 9.0667, 48.6156)
Luminance	0.0907 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F46BC #BCB53F

analogous

#3F85BC #3F46BC #773FBC

triadic

#3F46BC #BC3F46 #46BC3F

tetradic

#3F46BC #BC3F85 #BCB53F #3FBC77

square

#3F46BC #BC3F85 #BCB53F #3FBC77

split-complementary

#3F46BC #BC773F #85BC3F

monochromatic

#202460 #30358E #3F46BC #6B70CD #999CDD

Accessibility & contrast

On white

7.46

#3F46BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3F46BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F46BC

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46BC	#FFFFFF	#000000	##FFFFFF
##3F46BC	1.00	7.46	2.81	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC0

Deuteranopia (green-blind)

#004FBA

Tritanopia (blue-blind)

#00647A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f46bc;
/* rgb */ color: rgb(63, 70, 188);
/* oklch */ color: oklch(46.3% 0.182 274.2);

Tailwind

colors: {
  custom: {
    50: '#8379d1',
    500: '#3f46bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f46bc;
$custom-light: #8379d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46bc",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 188
  },
  "hsl": {
    "h": 236.64,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.46341,
    "c": 0.1822,
    "h": 274.2
  },
  "luminance": 0.09068
}

Semantic roles & 50–950 ramp

primary

#3F46BC

secondary

#C9C58E

accent

#D24ED9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F46BC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →